What health risks did athletes face in the polluted River Seine?

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Health Risks Faced by Athletes in the Polluted River Seine

Athletes participating in the River Seine triathlon faced potential health risks due to ingesting water contaminated with high levels of E. coli bacteria and other pollutants. The presence of these contaminants, particularly E. coli which is an indicator of faecal matter, poses a significant health hazard when swallowed. While the specific immediate effects beyond vomiting are not detailed, the general health risks associated with ingesting such polluted water can include gastrointestinal illnesses.
Elevated E. Coli Levels Beyond Safe Limits

During the period leading up to and including the triathlon, the River Seine experienced significant spikes in E. coli bacteria levels. On some days in June, these levels were reported to be ten times higher than the authorised limits set for the triathlon event. This contamination resulted from heavy rainfall overwhelming Paris's sewerage system, leading to the discharge of untreated wastewater into the river.
Impact of Rainfall on Water Quality

The water quality of the Seine deteriorated significantly following heavy rainfall in Paris. The city experienced a month's worth of rain within a 36-hour period around the Games' opening ceremony. This deluge overwhelmed the upgraded sewerage system, which was a part of a 1.4 billion euro investment aimed at improving the river's cleanliness, causing untreated wastewater to flow directly into the Seine.
Historical Context of River Cleanliness

The River Seine has been historically off-limits for public swimming since 1923, highlighting its long-standing issues with pollution. Despite efforts to clean up the waterway, including the recent upgrade, the river had consistently failed water quality tests throughout the spring and early summer. Only by the start of July did the Seine begin to pass some of these tests, but the persistent issues, exacerbated by weather conditions, meant that the water remained a concern for athletes.

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What health risks did athletes face in the polluted River Seine?

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